Spatial predicates specify the relationship between geometric values.
Topological spatial predicates
(INTERSECTS, DISJOINT, CONTAINS, WITHIN,
TOUCHESCROSSES, OVERLAPS and RELATE)
are defined in terms of the DE-9IM model described in the
OGC Simple Features for SQL specification.

Tests whether two geometries overlap.
Geometries overlap if they have the same dimension, have at least one point each not shared by the other, and the intersection of the interiors of the two geometries has the same dimension as the geometries themselves

Tests whether the distance between two geometries is no more than the specified distance.
distance is an unsigned numeric value for the distance tolerance.
units is one of feet, meters, statutemiles, nauticalmiles, kilometers

Tests whether a geometry intersects a bounding box
specified by its minimum and maximum X and Y values.
The optional CRS is a string containing an SRS code
(For example, 'EPSG:1234'.
The default is to use the CRS of the queried layer)

String literal delimited by single quotes. To include a single quote in the
string use two single-quotes: ''

Geometry

Geometry in WKT format.
WKT is defined in the OGC Simple Features for SQL specification.
All standard geometry types are supported:
POINT, LINESTRING, POLYGON,
MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, GEOMETRYCOLLECTION.
A custom type of Envelope is also supported
with syntax ENVELOPE(x1x2y1y2).

Time

A UTC date/time value in the format yyyy-mm-hhThh:mm:ss.
The seconds value may have a decimal fraction.
The time zone may be specified as Z or +/-hh:mm.
Example: 2006-11-30T00:30:00Z

Duration

A time duration specified as P[ y Y m M d D]T[ h H m M s S].
The duration can be specified to any desired precision by including
only the required year, month, day, hour, minute and second components.
Examples:
P1Y2M,
P4Y2M20D,
P4Y2M1DT20H3M36S